Tank-charging appliance



June`4, 1929. HUNTEMULLER i -l,716.059

" TANK 'CHARGING APPLIANGE Filed Nov. 14, l192'? Jh venor.- Clar@ Hanta mtl er I @j/@MMM n@ PATENT oFFlci-z.

CARL HUNTEMLLER, OF WEISSENBORN, NEAR FREIBERG, GERMANY.

TANK-CHARGING APPLIANCE.

Application filed November 14, 1927, Serial My invention relates to tank-charging appliances, particularly for boilers in which cellulose is treated, and it is an object of my invention to provide an appliance of this kind which combines compactncss, simplicity as to construction and operation, low power consumption, and chcapness.

'lo this end, I equip my appliance with an air screw projecting into the tank, for instance, into the charging pipe of a boiler, and provide suitable means, as an electromotor, for rotating the air screw.

It has already been proposedto provide charging appliances which are placed on the tank or boiler and are removed after the charging has been completed but such appliances as heretofore constructed are large, heavy, and cumbersome in proportion, their power consumption is'high and their maintenance cost is excessive on account of the many parts it comprises, some of which are very delicate.

These drawbacks are overcome in 1n invention and an appliance is provided w rich, as compared with existing appliances in which the large size and weight are prohibitive under some conditions, can be adapted anywhere on account of the goed features recited above.

In a preferred embodiment of my invention, l provide a frame, a vertical shaft in the frame, an air screw on the shaft, and an electric motor on the shaft.

In the accompanying drawing, l have illustrated my appliance in position in the charging pipe of a cellulose boiler but it is l understood that this is only by way of example and that I am not limited to this particular case, nor to any one of the constructional details shown and described.

Referring now to the drawing, 3 is a boiler, 4 is its charging pipe, l2 is a funnel projecting downwards from a tank containing a supply of wood chips, 14 .is a slide for controlling the opening of the funnel, and 13 is a hand wheel for operating the slide. 1 is a frame adapted to be placed into the chargin@ pipe 4, 2 is a flange on the frame by whic it is supported on the top of the ipe 4, 6 is a shaft mounted to rotate in iearings 7, 7 which are connected with the frame l by brackets 0r spiders 8, 8, 5 is an air screw having preferably three blades, and 9 is an electric motor mounted on a bracket 10 above the frame l. 11 is a No. 233,294, and in Germany May 11,1927.

detachably secured on the lframe 1 and is preferably so arranged as to enclose the inotor S), as shown.

In ojmration, the appliance is inserted in the pipe 4, as shown, this being readily effectcd by two men in a few minutes, on account of the small size and light. weight of the appliance. The motor S) is started, and the slide I4 is opened. The chips from the funnel l2 drop onto the air screw 5 and are dispersed by its rapid rotation. The chips are projected into the boiler at correspomling velocity and with considerable force, and it has been found that they will all lie ilat and, as it were, seek for a position in Which they are sheltered from 'the intense air circulation. These positions, in which cach particle of wood is able to withstand the air currents, are rapidly assumed by the several chips.

Preferably, as illustrated, the frame l projects into the boiler 3 to such a distance that the air screw 5 is directly below the base of the pipe 4, as in this position it is particularly effective While, on the other hand, the end of the appliance projects into the boiler only to such depth as not to require recharging of the pipe 4 which is inevitable in appliances projecting far into the boiler. ture in favour of my appliance as it saves time. The period for chargin is very short as the placing in position an removin of the appliance is performed rapidly, an an :ulditional saving is effected by the elimination of recharging.

This is another important fea- It will bc understood thatfmy appliance i as compared with existing appliances, 1s extremely simple as to itsconstructlon and operation, is without delicate parts requiring frequent repair, and its wear is quite small. The simplicity and compactness of the unit are largely due to the arrangement of the motor 9 within the hopper 11 and to the direct connection of the motor with the air screw shaft 6.

My appliance may be further improved, particularly with a View to facilitating its operation, by making the hopper l1 detachable and by dividing it. In this case, the frame with the screw 5 and the motor 9 1s placed in position vand the hoppervll is then secured on the frame l. After charging, the operations of building-up are performed in reversed order. 'Ihe handling of the applicharging hopper which may be divided and ance is facilitated and this brings about a further reduction of the charging period,.al1

resulting in a reduction of the initial -cost 'of the product made in the boiler.

I claim: K

1. ln a tank-charging appliance comprisT ing a frame, v means or supporting said frame in the charging opening "of the tank,

an air screwin said frame projecting into' the tank, and means for rotating said screw.

2. Av tank-charging appliance comprisf ing a frame. adapted to be placed in the tank, a vertical shaft in said' frame, an air screw on said shaft projecting -into the tank, and means for rotating said screw.

3. A tank-charging appliance comprising a frame adapted 'to be placed in a tank, ,a charging hopper on said frame,'a vertical shaft in said frame, an air screw on said shaft projecting into the tank, and an electromotor on said shaft and in saidhopper. 4f. A `tank-charging appliance comprising a frame adapted to be placed in a tank, a

detachable charging hopper on said frame,

a vertical shaft in said frame, an air screw d on said shaft projecting into the tank, and an electromotor on said shaft and in *said hopper.

5. A tank-charging appliance comprising a-frame adapted toebe placedin a tank, a detachable charging hopper adapted to be dividedand seated on said frame, a vertical shaft .in said frame, an air screw on saidl shaft projecting into the tank, and an electrornotor` .onsaid shaft and in "said hopper.

ing said frame in the ycharging opening of' the tank, an airscrewrotatably mounted .oni .said frame,m and operating means carrled by said frame for operatingsaid air screw.

8. A tank-charging appliance comprising a frame, .means for supporting said frame in the charging opening of the tank, vair current Ddeveloping means carried by said frame, and operating means mounted on said frame for operating said air. current developing means. I

In testimony whereof, I have signed my name to thisV specification, this 31st day of October, 1927.

I. CARL TIUlWIEMULLER.` 

